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spi: don't unoptimize message in spi_async()

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[ Upstream commit c86a918b1b ]

Calling spi_maybe_unoptimize_message() in spi_async() is wrong because
the message is likely to be in the queue and not transferred yet. This
can corrupt the message while it is being used by the controller driver.

spi_maybe_unoptimize_message() is already called in the correct place
in spi_finalize_current_message() to balance the call to
spi_maybe_optimize_message() in spi_async().

Fixes: 7b1d87af14 ("spi: add spi_optimize_message() APIs")
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240708-spi-mux-fix-v1-1-6c8845193128@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
David Lechner 2024-07-08 20:05:28 -05:00 committed by Greg Kroah-Hartman
parent 02085decae
commit 8b9af6d675
1 changed files with 0 additions and 2 deletions
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2
drivers/spi/spi.c
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@ -4423,8 +4423,6 @@ int spi_async(struct spi_device *spi, struct spi_message *message)
spin_unlock_irqrestore(&ctlr->bus_lock_spinlock, flags);
spi_maybe_unoptimize_message(message);
return ret;
}
EXPORT_SYMBOL_GPL(spi_async);